This page delivers traffic analytics for Plymouth County, Massachusetts. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Plymouth County, Massachusetts among 1,221 road miles divided in 41,771 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 154 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
7,804
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.7 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
21.8%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$120,670
Our data indicates an estimated average traffic volume of 7,804 vehicles per day in Plymouth County, Massachusetts that results in 11,686,203 vehicle-miles traveled per day (≈4.3 billion per year). The traffic stream is comprised of an average of 1 truck for every 17 vehicles. Typical time spent behind the wheel per trip is 32.7 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Massachusetts state averages: Plymouth sees 4% lower average daily traffic volume than the state average (7,804 vehicles per day against 8,166), suggesting less demand on each road - a critical factor for logistics and site planning. Across the whole network that adds up to 11,686,203 vehicle-miles traveled per day (≈4.3 billion per year), roughly 8.6% of Massachusetts's statewide total. The average trip takes 32.7 minutes, 5% lower than the state level. At 9% lower than the state level, the 21.8% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. 69% of counties in Massachusetts see less traffic than Plymouth's 7,804 vehicles per day. 23% of counties in Massachusetts have a shorter average travel time than Plymouth's 32.7 minutes.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
23,238
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
7.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
43.2 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
46.9%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
50.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$116,083
A significant volume of traffic in Plymouth County, Massachusetts utilizes the highway network. The average highway carries 23,238 vehicles per day, 207% more than the average non-highway road in the same area, which carries 7,575 vehicles per day. That average covers 211 highway road miles divided in 612 segments (average segment length 1,822 ft), together carrying 5,121,953 vehicle-miles traveled per day (≈1.9 billion per year). By highway travel volume, Plymouth outranks 55% of counties in Massachusetts. Trucks constitute 7.0% of highway traffic.
Analytical insight
The concentration of trucks on highways (7.0%) is 17% lower than the state average for similar road classifications. This indicates Plymouth serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. By truck concentration, highways here outrank 27% of counties in Massachusetts. 27% of counties in Massachusetts see fewer highway trucks per day than Plymouth's roughly 1,627.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
7,575
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
5.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.6 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
21.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$122,633
The non-highway road network in Plymouth County, Massachusetts supports a substantial volume of traffic. The average non-highway road carries 7,575 vehicles per day, 67% less than the average highway in the same area, which carries 23,238 vehicles per day. That average covers 1,010 non-highway road miles divided in 41,159 segments (average segment length 130 ft), together carrying 6,564,250 vehicle-miles traveled per day (≈2.4 billion per year). Trucks constitute 5.2% of non-highway traffic.
Analytical insight
Compared to highways, non-highway routes see 26% fewer trucks by share. The non-highway congestion ratio of 21.4% is 7% lower than the state level, suggesting more efficient local mobility than the state average. Plymouth's overall average travel time exceeds 23% of counties in Massachusetts. Trip origins here have higher average income than 77% of counties in Massachusetts. 77% of counties in Massachusetts have a younger driver population than Plymouth.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 12:00 PM–6:00 PM, with volumes reaching approximately 69% higher than the daily average.
Weekend traffic:
Weekend volumes run about 14% below weekday levels.
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +23% versus the annual average.
Lowest month:
January is the quietest month, with volumes -21% versus the annual average.
Analytical insight
In Plymouth County, Massachusetts, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is pronounced at +23% in high season.
Traffic Flow Profile Comparison
Metric
Plymouth
Massachusetts
Average
Difference
Traffic
7,804
8,166
-4.4%
Truck % (Total Traffic)
6.0%
6.9%
-13.9%
Truck % (Highway)
7.0%
8.4%
-16.6%
Avg. Travel Time
32.7 min
34.4 min
-4.8%
Frequently Asked Questions
The average daily traffic volume is calculated at 7,804 vehicles per day, providing a baseline for daily operations and site assessment.
Plymouth carries more highway trucks by raw volume than 27% of counties in Massachusetts, at roughly 1,627 per day.
Drivers on Plymouth roads have a median age of 50 years, and the median household income of the neighborhoods trips originate from averages $120,670 - useful context for retail siting and customer profiling.
Approximately 34% of highway traffic and 9% of non-highway traffic consists of vehicles whose trip originates outside Plymouth County, Massachusetts. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Weekday peaks occur between 10:00 AM and 12:00 PM in the morning and between 12:00 PM and 6:00 PM in the evening - about 69% above the daily average.
Traffic volumes are typically 23% higher during June–August. Volumes drop to their lowest levels in January, averaging 6,188 vehicles per day - a 21% decrease from the annual average.
Data Sources & Methodology
The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:
Mobile device location data (anonymized and aggregated)
